RecyclerView does not show list of objects

RecyclerView does not show list of objects - android

I tried the solutions on the other similar posts that I found here but they did not help me. I hope someone can help.
I get data from Unsplash's API and the ArrayList contains 10 items once I get a response, that's why I think It has to be something with the way the view is inflated.
This is code:
public class MainActivity extends AppCompatActivity {
private static final String TAG = "unsplash";
private final String CLIENT_ID = "...myclientID...";
// testing keyword used on the API to search for pictures
private final String KEYWORD = "stackOverflow";
private final String urlBase = "https://api.unsplash.com/";
private Retrofit retrofit;
private RecyclerView recyclerView;
private RecyclerViewAdapter recyclerViewAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
retrofit = new Retrofit.Builder()
.baseUrl(urlBase)
.addConverterFactory(GsonConverterFactory.create())
.build();
recyclerView = findViewById(R.id.recyclerview);
recyclerView.setHasFixedSize(true);
GridLayoutManager layoutManager = new GridLayoutManager(this, 2);
recyclerView.setLayoutManager(layoutManager);
recyclerViewAdapter = new RecyclerViewAdapter();
recyclerView.setAdapter(recyclerViewAdapter);
getData();
}
private void getData() {
PictureService service = retrofit.create(PictureService.class);
Call<PictureResponse> pictureResponseCall = service.getPictureList(KEYWORD, CLIENT_ID);
pictureResponseCall.enqueue(new Callback<PictureResponse>() {
#Override
public void onResponse(Call<PictureResponse> call, Response<PictureResponse> response) {
if (response.isSuccessful()){
PictureResponse pictureResponse = response.body();
ArrayList<UnsplashPic> pictureList = pictureResponse.getResults();
recyclerViewAdapter.addPictures(pictureList);
}else{
Log.e (TAG, " onResponse " + response.errorBody());
}
}
#Override
public void onFailure(Call<PictureResponse> call, Throwable t) {
Log.e (TAG, " onFailure " + t.getMessage());
}
});
}
}
My adapter class:
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {
private ArrayList<UnsplashPic> pictureList;
public RecyclerViewAdapter (){
pictureList = new ArrayList<>();
}
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.item_view_holder, viewGroup, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull ViewHolder viewHolder, int i) {
UnsplashPic pic = pictureList.get(i);
viewHolder.artistName.setText(pic.user.getUsername());
viewHolder.unsplash.setText("Unsplash");
}
#Override
public int getItemCount() {
return pictureList.size();
}
public void addPictures(ArrayList<UnsplashPic> pictureList) {
pictureList.addAll(pictureList);
notifyDataSetChanged();
}
public class ViewHolder extends RecyclerView.ViewHolder {
private ImageView imageView;
private TextView artistName;
private TextView unsplash;
public ViewHolder (View itemView){
super(itemView);
imageView = itemView.findViewById(R.id.imageview);
artistName = itemView.findViewById(R.id.artist_name);
unsplash = itemView.findViewById(R.id.unsplash_name);
}
}
}
item_view_holder.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:id="#+id/imageview"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_gravity="center"
android:background="#ababab"
android:contentDescription="unsplash picture" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Photo by "/>
<TextView
android:id="#+id/artist_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="on "/>
<TextView
android:id="#+id/unsplash_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true" />
</LinearLayout>
activity_main.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="Search for pictures"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Search"/>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/recyclerview">
</android.support.v7.widget.RecyclerView>
</LinearLayout>

Here:
public void addPictures(ArrayList<UnsplashPic> pictureList) {
pictureList.addAll(pictureList);
notifyDataSetChanged();
}
you are actually adding the content of the pictureList you send as parameter of the function to that same list, your list from adapter is not updated.
You should do like this instead:
public void addPictures(ArrayList<UnsplashPic> pictureList) {
this.pictureList.addAll(pictureList);
notifyDataSetChanged();
}

Related

Child RecyclerView inside Parent RecyclerView is showing at End of Parent RecyclerView?

Child RecyclerView inside Parent RecyclerView is showing at End of Parent RecyclerView ?
I Want To Show Categroy in Parent RecyclerView & show its Sub Category in Child RecyclerView
But When I Click Parent RecyclerView To Show That Sub Category the Child RecyclerView is showing at The Full End Of Parent Category Please Check Where Is I'm Wrong?
Here is My Results:
First Item Clicked
.
Second Item Clicked
My Code:
This Is My Main Layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".USER.Category">
<androidx.recyclerview.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/Category"/>
</LinearLayout>
This is my Main java File:
public class Category extends AppCompatActivity {
static Toast Toasts;
RecyclerView Category;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_category);
Category = findViewById(R.id.Category);
Category.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false));
Category_View_request();
}
public void Category_View_request() {
RequestQueue requestQueue = Volley.newRequestQueue(Category.this);
String url = Constant.Category;
StringRequest stringRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
GsonBuilder gsonBuilder = new GsonBuilder();
Gson gson = gsonBuilder.create();
GridView_listItems[] Category_View_response = gson.fromJson(response, GridView_listItems[].class);
Category.setAdapter(new CategoryView_Adapter(Category.this, Category_View_response));
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toasts = Toast.makeText(Category.this, "ERROR: Please Check Internet & Try Again", Toast.LENGTH_SHORT);
Toasts.show();
}
});
requestQueue.add(stringRequest);
}
}
this is Parent Layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:orientation="vertical"
android:padding="5dp"
android:id="#+id/layout">
<androidx.cardview.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="120dp"
android:id="#+id/nameLayout">
<ImageView
android:id="#+id/categoryimage"
android:layout_width="120dp"
android:layout_height="120dp"
android:adjustViewBounds="true"
android:background="#fff"
android:contentDescription="#string/todo"
android:padding="8dp"
android:scaleType="fitXY" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="horizontal"
android:paddingLeft="8dp"
android:paddingTop="8dp"
android:paddingRight="8dp"
android:paddingBottom="8dp">
<Space
android:layout_width="112dp"
android:layout_height="wrap_content" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical"
android:paddingLeft="8dp"
android:paddingTop="8dp"
android:paddingRight="8dp"
android:paddingBottom="8dp">
<TextView
android:id="#+id/categoryname"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingStart="1dp"
android:singleLine="true"
android:text="#string/test_product_name"
android:textColor="#color/Black"
android:textSize="13sp"
tools:ignore="RtlSymmetry" />
<TextView
android:id="#+id/categorydec"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingStart="1dp"
android:paddingTop="3dp"
android:singleLine="true"
android:text="#string/test_product_description"
android:textColor="#color/common_google_signin_btn_text_light_default"
android:textSize="12sp"
tools:ignore="RtlSymmetry" />
</LinearLayout>
</LinearLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/click">
</RelativeLayout>
</RelativeLayout>
<androidx.cardview.widget.CardView
android:id="#+id/subview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_margin="5dp"
android:background="#color/White"
android:elevation="8dp"
android:paddingTop="10dp"
>
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/subCatview"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</androidx.cardview.widget.CardView>
</LinearLayout>
</androidx.cardview.widget.CardView>
</LinearLayout>
This is Parent Adapter:
public class CategoryView_Adapter extends RecyclerView.Adapter<CategoryView_Adapter.CategoryViewHolder> {
Toast Toasts;
private static Context context;
private static GridView_listItems[] data;
public CategoryView_Adapter(Context context, GridView_listItems[] data) {
this.context = context;
this.data = data;
}
#NonNull
#Override
public CategoryViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
View view = inflater.inflate(R.layout.category_view, parent, false);
return new CategoryViewHolder(view);
}
#SuppressLint("SetTextI18n")
#Override
public void onBindViewHolder(#NonNull final CategoryViewHolder holder, int position) {
final GridView_listItems CategoryList = data[position];
holder.categoryname.setText(CategoryList.getName());
holder.categorydec.setText(CategoryList.getId());
Glide.with(holder.categoryimage.getContext())
.applyDefaultRequestOptions(new RequestOptions()
.placeholder(R.drawable.product_loading)
.error(R.drawable.product_loading_failed))
.load(Constant.MAINImagUrl + CategoryList.getCategoryLogo().substring(2))
.into(holder.categoryimage);
holder.categoryname.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
holder.layout.setBackgroundColor(ContextCompat.getColor(context, R.color.common_google_signin_btn_text_light_default));
Grid_View_request(CategoryList.getName());
}
});
}
#Override
public int getItemCount() {
return data.length;
}
public static class CategoryViewHolder extends RecyclerView.ViewHolder {
ImageView categoryimage;
TextView categoryname, categorydec;
CardView subview;
RelativeLayout click;
LinearLayout layout;
public static RecyclerView subCatview;
public CategoryViewHolder(#NonNull View itemView) {
super(itemView);
categoryimage = (ImageView) itemView.findViewById(R.id.categoryimage);
categoryname = (TextView) itemView.findViewById(R.id.categoryname);
categorydec = (TextView) itemView.findViewById(R.id.categorydec);
click = (RelativeLayout) itemView.findViewById(R.id.click);
subview = (CardView) itemView.findViewById(R.id.subview);
layout = (LinearLayout) itemView.findViewById(R.id.layout);
subCatview = (RecyclerView) itemView.findViewById(R.id.subCatview);
GridLayoutManager gridLayoutManager = new GridLayoutManager(MyApplication.getAppContext(), 3, GridLayoutManager.VERTICAL, false);
subCatview.setLayoutManager(gridLayoutManager);
}
}
public static void Grid_View_request(final String category) {
RequestQueue requestQueue = Volley.newRequestQueue(MyApplication.getAppContext());
String url = Constant.Sub_Category;
StringRequest stringRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
if (response.contains("CityGroceryEmptyResponse")) {
Toast.makeText(MyApplication.getAppContext(), "No Sub Category Found", Toast.LENGTH_SHORT).show();
} else {
GsonBuilder gsonBuilder = new GsonBuilder();
Gson gson = gsonBuilder.create();
Sub_Category_list[] Sub_Category_list = gson.fromJson(response, Sub_Category_list[].class);
subCatview.setAdapter(new Sub_Category_Adapter(MyApplication.getAppContext(), Sub_Category_list));
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(MyApplication.getAppContext(), "ERROR: Please Check Internet & Try Again", Toast.LENGTH_SHORT).show();
}
}) {
#Override
protected Map<String, String> getParams() {
Map<String, String> params = new HashMap<String, String>();
params.put("category", category);
return params;
}
#Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> params = new HashMap<String, String>();
params.put("Content-Type", "application/x-www-form-urlencoded");
return params;
}
};
requestQueue.add(stringRequest);
}
}
This is My Child Layout:
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="120dp"
android:layout_gravity="center"
android:layout_margin="2dp"
android:orientation="horizontal"
android:elevation="8dp"
app:cardCornerRadius="1dp">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:paddingLeft="8dp"
android:paddingTop="8dp"
android:paddingRight="8dp"
android:paddingBottom="8dp">
<ImageView
android:id="#+id/subCatNameimage"
android:layout_width="80dp"
android:layout_height="80dp"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#mipmap/ic_launcher" />
<TextView
android:id="#+id/subCatName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/subCatNameimage"
android:layout_marginTop="4dp"
android:gravity="center"
android:maxLength="30"
android:text="menu name"
android:textColor="#color/colorPrimary"
android:textSize="14sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/subCatNameimage" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
This is My Child Adapter:
public class Sub_Category_Adapter extends RecyclerView.Adapter<Sub_Category_Adapter.CategoryViewHolder> {
Toast Toasts;
private static Context context;
private static Sub_Category_list[] data;
public Sub_Category_Adapter(Context context, Sub_Category_list[] data) {
this.context = context;
this.data = data;
final Sub_Category_list SubCategoryList = data[0];
}
#NonNull
#Override
public CategoryViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
View view = inflater.inflate(R.layout.gridview_items, parent, false);
return new CategoryViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull final CategoryViewHolder holder, final int position) {
final Sub_Category_list SubCategoryList = data[position];
holder.subCatName.setText(SubCategoryList.getSubCategoryName());
Glide.with(holder.subCatNameimage.getContext())
.applyDefaultRequestOptions(new RequestOptions()
.placeholder(R.drawable.product_loading)
.error(R.drawable.product_loading_failed))
.load(Constant.MAINImagUrl + SubCategoryList.getSubCategoryLogo().substring(2))
.into(holder.subCatNameimage);
}
#Override
public int getItemCount() {
return data.length;
}
public static class CategoryViewHolder extends RecyclerView.ViewHolder {
ImageView subCatNameimage;
TextView subCatName;
public CategoryViewHolder(#NonNull View itemView) {
super(itemView);
subCatName = (TextView) itemView.findViewById(R.id.subCatName);
subCatNameimage = (ImageView) itemView.findViewById(R.id.subCatNameimage);
}
}
}
Please Correct Me Where is doing Mistake
Thanks In Advance

You can achieve that requirement by using an expandable recycler view.
There are a lot of libraries you can use to achieve this.
You can use this library.
Or follow this post to achieve this on your own, you might need to make some changes to get the output as per your requirement.

I'am achieve My requirement by using an expandable recycler view
HERE

How to integrate dialogflow in android apps

I want to integrate my chatbot(created by dialogflow) to my apps and I have create the xml files but I didn't find a way how to match between them.
I have already database using room library persistance .And, I'm coding with Java.
How can I itegrate my agent into my apps?And how to add a recylerViewAdapter for my chatmessages.
Thank you
msg_list.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/leftText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:layout_alignParentStart="true"
android:text="Hello this is me!!"
android:padding="8dp"
android:textColor="#212121"
android:background="#drawable/left_background"
android:elevation="2dp"
android:layout_alignParentLeft="true" />
<TextView
android:id="#+id/rightText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:layout_alignParentEnd="true"
android:text="Hi!! How are you!!"
android:background="#drawable/right_background"
android:textColor="#fff"
android:padding="8dp"
android:elevation="2dp"
android:layout_alignParentRight="true" />
</RelativeLayout>
Chatbot.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Chatbot">
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingTop="10dp"
android:paddingBottom="50dp"
android:clipToPadding="false"
android:background="#f4f6f7"
tools:listitem="#layout/msglist"
/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginEnd="5dp"
android:layout_marginBottom="10dp"
android:elevation="2dp"
android:layout_toStartOf="#+id/addBtn"
android:layout_centerVertical="true"
android:layout_marginLeft="10dp"
android:layout_marginRight="5dp"
android:layout_toLeftOf="#+id/addBtn">
<EditText
android:id="#+id/message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:layout_marginEnd="20dp"
android:background="#fff"
android:hint="Type a Message"
android:minHeight="50dp"
android:textSize="18sp" />
</RelativeLayout>
<RelativeLayout
android:id="#+id/addBtn"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentEnd="true"
android:background="#drawable/back_fab"
android:layout_marginBottom="10dp"
android:layout_marginEnd="5dp"
android:elevation="4dp"
android:layout_centerInParent="true"
android:layout_alignParentRight="true"
android:layout_marginRight="5dp">
<ImageView
android:id="#+id/fab_img"
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_centerInParent="true"
android:src="#drawable/ic_send_white_24dp"
android:tint="#fff"/>
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>
ChatbotActivity
public class Chatbot extends AppCompatActivity implements AIListener {
RecyclerView recyclerView;
EditText message;
RelativeLayout addBtn;
ChatbotAdapter adapter;
Boolean flagFab = true;
private AIService aiService;
private AIServiceContext customAIServiceContext;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chatbot);
recyclerView = (RecyclerView)findViewById(R.id.recyclerView);
message = (EditText)findViewById(R.id.message);
addBtn = (RelativeLayout)findViewById(R.id.addBtn);
recyclerView.setHasFixedSize(true);
final LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
linearLayoutManager.setStackFromEnd(true);
recyclerView.setLayoutManager(linearLayoutManager);
addBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String msg = message.getText().toString().trim();
if (!message.equals("")) {
ChatMessage chatMessage = new ChatMessage(msg, "user");
}
message.setText("");
}
});
adapter = new ChatbotAdapter();
recyclerView.setAdapter(adapter);
final AIConfiguration config = new AIConfiguration("Acces",
AIConfiguration.SupportedLanguages.French,
AIConfiguration.RecognitionEngine.System);
aiService = AIService.getService(this, config);
customAIServiceContext = AIServiceContextBuilder.buildFromSessionId("ID");
aiService.setListener(this);
final AIDataService aiDataService = new AIDataService(config);
final AIRequest aiRequest = new AIRequest();
addBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String msg = message.getText().toString().trim();
if (!msg.equals("")) {
aiRequest.setQuery(msg);
new AsyncTask<AIRequest,Void, AIResponse>(){
#Override
protected AIResponse doInBackground(AIRequest... aiRequests) {
final AIRequest request = aiRequests[0];
try {
final AIResponse response =
aiDataService.request(aiRequest);
return response;
} catch (AIServiceException e) {
}
return null;
}
#Override
protected void onPostExecute(AIResponse response) {
if (response != null) {
Result result = response.getResult();
String reply = result.getFulfillment().getSpeech();
}
}
}.execute(aiRequest);
}
else {
aiService.startListening();
}
message.setText("");
}
});
}
#Override
public void onResult(AIResponse response) {
}
#Override
public void onError(AIError error) {
}
#Override
public void onAudioLevel(float level) {
}
#Override
public void onListeningStarted() {
}
#Override
public void onListeningCanceled() {
}
#Override
public void onListeningFinished() {
}
}
Chatmessage
public class ChatMessage {
private String msgText;
private String msgUser;
public ChatMessage(String msgText, String msgUser){
this.msgText = msgText;
this.msgUser = msgUser;
}
public ChatMessage(){
}
//+getter & setter
}
ChatbotAdapter
//I don't know how to code this class
public class ChatbotAdapter extends RecyclerView.Adapter<ChatbotAdapter.ChatHolder>
{
#NonNull
#Override
public ChatHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
View itemView = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.msglist, viewGroup, false);
return new ChatHolder(itemView);
}
#Override
public void onBindViewHolder(#NonNull ChatHolder chatHolder, int i) {
}
#Override
public int getItemCount() {
return 0;
}
public class ChatHolder extends RecyclerView.ViewHolder {
TextView leftText, rightText;
public ChatHolder(View itemView) {
super(itemView);
leftText = (TextView) itemView.findViewById(R.id.leftText);
rightText = (TextView) itemView.findViewById(R.id.rightText);
}
}
}

Your question is not that clear. Please add some more details like what is you want, what you have implemented and what issue is coming.
You may also try my implementation. I am not using Recycler view in my implementation, but you could follow the following article I wrote for integrating Dialogflow with Android. Try an follow the V2 version as V1 will phase out by October this year.
Also, Do not use fragment for Chatbot as it somehow does not work. Try and make a simple chatbot using my implementation and then you can work towards your own implementation.
Hope it works.

Data from JSON does not appear on the RecyclerView layout

I have created RecyclerView and showing data from JSON.
Issue I'm facing is, while Toast data is showing correctly, but in RecyclerView same data is not appear.
Here is code:
public class MainActivity extends AppCompatActivity {
private static final int NUM_LIST_ITEMS = 100;
private static final String TOKEN =
"71cf2d3dec294394e267fbb0bf28916f4198f8d6";
private CuloAdapter culoAdapter;
List<Hotel> lh = new ArrayList<>();
RecyclerView recyclerView;
#Override
protected void attachBaseContext(Context newBase) {
super.attachBaseContext(newBase);
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = findViewById(R.id.rv_tiketapi);
LinearLayoutManager layout = new LinearLayoutManager(this);
layout.setOrientation(LinearLayoutManager.VERTICAL);
recyclerView.setLayoutManager(layout);
CuloAdapter ar = new CuloAdapter(lh);
recyclerView.setAdapter(ar);
loadHotelLocation();
}
private void loadHotelLocation() {
final search apiService = ApiService.getService(search.class);
retrofit2.Call<SingleResult<Hotel>> call = apiService.findHotel(TOKEN,
"json");
call.enqueue(new Callback<SingleResult<Hotel>>() {
#Override
public void onResponse(retrofit2.Call<SingleResult<Hotel>> call,
Response<SingleResult<Hotel>> response) {
if (response.body().getDiagnostic().isSuccess()) {
//SingleResult.ResultList list =
response.body().getResults();
List<Hotel> mHotels = (List<Hotel>)
response.body().getResults().getResult();
lh.addAll(mHotels);
Toast.makeText(getApplicationContext(), "OK" +lh,
Toast.LENGTH_LONG).show();
}
}
#Override
public void onFailure(retrofit2.Call<SingleResult<Hotel>> call,
Throwable t) {
}
});
}
RecyclerView Adapter :
public class CuloAdapter extends
RecyclerView.Adapter<CuloAdapter.ViewHolder> {
public CuloAdapter(List<Hotel> lh) {
this.items = lh;
}
public static class ViewHolder extends RecyclerView.ViewHolder {
public TextView txtTitle;
public TextView txtSubTitle;
public ImageView imgIcon;
public ViewHolder(final View container) {
super(container);
txtTitle = (TextView) container.findViewById(R.id.airportName);
txtSubTitle = (TextView) container.findViewById(R.id.airportCode);
}
}
private List<Hotel> items;
public CuloAdapter(final Activity activity, List<Hotel> items) {
this.items = items;
}
#Override
public int getItemCount() {
return items.size();
}
#Override
public void onBindViewHolder(CuloAdapter.ViewHolder holder, int position) {
Hotel item = items.get(position);
holder.txtTitle.setText(item.getLabel());
holder.txtSubTitle.setText(item.getId());
}
#Override
public CuloAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int
viewType) {
// create a new view
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.item_flight, parent, false);
return new ViewHolder(v);
}
}
MainActivity XML :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.admin.exampletiketapi.MainActivity">
<EditText
android:id="#+id/et_find"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAlignment="center" />
<android.support.v7.widget.RecyclerView
android:id="#+id/rv_tiketapi"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</android.support.v7.widget.RecyclerView>
</LinearLayout>
Item List XML :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/airportsLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:paddingTop="10dp">
<TextView
android:id="#+id/airportName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:text="Soekarno Hatta" />
<TextView
android:id="#+id/airportCode"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:text="20" />
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginTop="5dp"
android:background="#DDD"
android:visibility="visible" />
</LinearLayout>

In your code you are trying to set adapter before loading data.
CuloAdapter ar = new CuloAdapter(lh);
recyclerView.setAdapter(ar);
loadHotelLocation();
What i found is You are getting data in loadHotelLocation(), but trying to set adpter before that,

Call notifyDatasetChanged after lh.addAll(mHotels). And check for null's else you are heading for crash in case search results are zero/null

How to properly implement a nested recyclerview, child recyclerviews behaving oddly

I am developing a chat application. The chat messages consists of normal text messages and sometimes it can be a list of items in a recyclerview.
So I've implemented nested Recyclerview. So what happens is in the json response if the message is just a normal text is a textview will be displayed but the message contains a URL then the horizantal recyclerview is shown in place of textview.
The problem is if in the json reponse let's say there are 10 messages and in that 10, 4 of them are URL's so i should be seeing 6 normal texts and 4 Recyclerviews. But the nested recyclerview is behaving very oddly sometimes it doesn't even display, sometimes i can see 2 Recyclerviews and sometimes 4 of them but with the same URL (same list of items).
I don't what i am doing wrong. can someone take a look at the code and tell me what's wrong?
My Parent(Vertical) Recyclerview layout
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<data>
<variable
name="messageViewModel"
type="com.sukshi.sukshichat.viewmodel.MessageFragmViewModel"/>
</data>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".view.fragment.MessagesFragment">
<android.support.v7.widget.RecyclerView
android:id="#+id/rv_message"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="5dp"
android:background="#ffffff"
android:paddingLeft="4dp"
android:paddingRight="4dp"
android:layout_marginTop="0dp"
android:layout_below="#+id/kjk"
android:layout_above="#+id/rv_message_container"
tools:listitem="#layout/test"
/>
</RelativeLayout>
</layout>
Vertical Recyclerview child layout
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<data>
<import
alias="cons"
type="com.sukshi.sukshichat.utils.ConstantsFirebase"/>
<import type="android.view.View"/>
<variable
name="messageViewModel"
type="com.sukshi.sukshichat.viewmodel.MessageAdapterViewModel"/>
</data>
<android.support.percent.PercentRelativeLayout
android:layout_height="wrap_content"
android:id="#+id/rv_container"
android:layout_width="wrap_content">
<android.support.v7.widget.RecyclerView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="10dp"
android:id="#+id/nested_recyclerview"
>
</android.support.v7.widget.RecyclerView>
<RelativeLayout
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="4dp"
android:id="#+id/sender"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="4dp"
app:layout_widthPercent="70%">
<hani.momanii.supernova_emoji_library.Helper.EmojiconTextView
android:layout_height="wrap_content"
android:id="#+id/tv_item_message"
android:layout_width="wrap_content"
android:maxWidth="300dp"
android:textColor="#ffffff"
android:text="#{messageViewModel.message}"
android:background="#drawable/chat_sender"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:padding="10dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#{messageViewModel.time}"
android:layout_marginRight="4dp"
android:id="#+id/tv_item_message_time"
android:layout_alignBottom="#+id/tv_item_message"
android:layout_toLeftOf="#+id/tv_item_message"/>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/iv_image"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:maxHeight="#dimen/item_message_max_height"
android:maxWidth="#dimen/item_message_max_width"
android:onClick="#{messageViewModel::onItemClick}"
android:scaleType="centerCrop"
android:transitionName="shared"
android:visibility="#{messageViewModel.typeMessage ? View.GONE : View.VISIBLE}"
app:mapLocation="#{messageViewModel.mapLocation}"
app:photoUrlMessage="#{messageViewModel.message}"/>
</FrameLayout>
</RelativeLayout>
<RelativeLayout
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginTop="4dp"
android:id="#+id/reciever"
android:layout_marginBottom="4dp"
app:layout_widthPercent="70%">
<hani.momanii.supernova_emoji_library.Helper.EmojiconTextView
android:layout_height="wrap_content"
android:id="#+id/tv_item_message1"
android:layout_width="wrap_content"
android:background="#drawable/chat_recieve"
android:maxWidth="300dp"
android:textColor="#000000"
android:text="#{messageViewModel.message}"
android:padding="10dp" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/show_garments2"
android:text="Show Garments"
android:visibility="gone"
android:background="#drawable/chat_recieve"
android:elevation="10dp"
android:paddingLeft="10dp"
android:textColor="#000000"
style="#style/Widget.AppCompat.Button.Colored"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#{messageViewModel.time}"
android:id="#+id/tv_item_message_time11"
android:layout_marginLeft="4dp"
android:layout_alignBottom="#+id/tv_item_message1"
android:layout_toRightOf="#+id/tv_item_message1"/>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/iv_image1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:maxHeight="#dimen/item_message_max_height"
android:maxWidth="#dimen/item_message_max_width"
android:onClick="#{messageViewModel::onItemClick}"
android:scaleType="centerCrop"
android:transitionName="shared"
android:visibility="#{messageViewModel.typeMessage ? View.GONE : View.VISIBLE}"
app:mapLocation="#{messageViewModel.mapLocation}"
app:photoUrlMessage="#{messageViewModel.message}"/>
</FrameLayout>
</RelativeLayout>
</android.support.percent.PercentRelativeLayout>
</layout>
Vertical Recyclerview adapter
private void initializeFirebase() {
if (valueUserListener == null) {
valueUserListener = createFirebaseUsersListeners();
}
mRefUsers = FirebaseDatabase.getInstance().getReference(ConstantsFirebase.FIREBASE_LOCATION_USERS);
mRefUsers.keepSynced(true);
mRefUsers.addValueEventListener(valueUserListener);
Query messagesRef = FirebaseDatabase.getInstance()
.getReference(ConstantsFirebase.FIREBASE_LOCATION_CHAT)
.child(mChildChatKey)
.orderByKey().limitToLast(50);
messagesRef.keepSynced(true);
attachMessagesToRecyclerView(messagesRef);
}
private void attachMessagesToRecyclerView(final Query messagesReference) {
mAdapter = new FirebaseRecyclerAdapter<Message, MessageItemHolder>(Message.class,
R.layout.test123, MessageItemHolder.class, messagesReference) {
#Override
public MessageItemHolder onCreateViewHolder(ViewGroup parent, int viewType) {
Test123Binding adapterItemMessageBinding = DataBindingUtil.inflate(LayoutInflater
.from(parent.getContext()), viewType, parent, false);
return new MessageItemHolder(adapterItemMessageBinding);
}
#Override
protected void populateViewHolder(final MessageItemHolder viewHolder, final Message message, int position) {
int index = mUsersEmails.indexOf(message.getEmail());
if (index != -1) {
viewHolder.bindMessage(mUsers.get(index), message, MessagesFragment.this);
}
if (viewHolder.mAdapterItemMessageBinding.getMessageViewModel().isSender()){
viewHolder.mAdapterItemMessageBinding.reciever.setVisibility(View.GONE);
viewHolder.mAdapterItemMessageBinding.sender.setVisibility(View.VISIBLE);
}else {
viewHolder.mAdapterItemMessageBinding.reciever.setVisibility(View.VISIBLE);
viewHolder.mAdapterItemMessageBinding.sender.setVisibility(View.GONE);
}
String http = message.getMessage();
// if (htttpmessage != null){
if (http.contains("google") && message.getType() == 0){
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
viewHolder.mAdapterItemMessageBinding.nestedRecyclerview.setLayoutParams(params);
filterLink = message.getMessage();
ListOfdataAdapter.clear();
JSON_HTTP_CALL(filterLink);
nestedRecyclerview(viewHolder);
viewHolder.mAdapterItemMessageBinding.nestedRecyclerview.setVisibility(View.VISIBLE);
viewHolder.mAdapterItemMessageBinding.tvItemMessage1.setVisibility(View.INVISIBLE);
// filterLink = message.getFilterLink();
}else{
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(0,
0);
viewHolder.mAdapterItemMessageBinding.nestedRecyclerview.setLayoutParams(params);
viewHolder.bindMessage(mUsers.get(index), message, MessagesFragment.this);
viewHolder.mAdapterItemMessageBinding.tvItemMessage1.setVisibility(View.VISIBLE);
}
if (message.getType() == 1 || message.getType() == 2){
viewHolder.mAdapterItemMessageBinding.tvItemMessage.setVisibility(View.INVISIBLE);
}else {
viewHolder.mAdapterItemMessageBinding.tvItemMessage.setVisibility(View.VISIBLE);
}
/* viewHolder.mAdapterItemMessageBinding.showGarments2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
showpDialog();
filterLink = message.getMessage();
ListOfdataAdapter.clear();
JSON_HTTP_CALL(filterLink);
}
});
*/
}
};
mFragmentMessagesBinding.rvMessage.setAdapter(mAdapter);
mFragmentMessagesBinding.rvMessage.getAdapter().registerAdapterDataObserver(
new RecyclerView.AdapterDataObserver() {
#Override public void onItemRangeInserted(int position, int itemCount) {
super.onItemRangeInserted(position, itemCount);
mFragmentMessagesBinding.rvMessage.scrollToPosition(position);
}
});
}
So whenever there is a URl in the message key below method will be called
public void JSON_HTTP_CALL(String url){
RequestOfJSonArray = new JsonArrayRequest(url,
new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
ParseJSonResponse(response);
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});
requestQueue = Volley.newRequestQueue(getActivity());
requestQueue.add(RequestOfJSonArray);
}
public void ParseJSonResponse(JSONArray array){
for(int i = 0; i<array.length(); i++) {
UploadImage GetDataAdapter2 = new UploadImage();
JSONObject json = null;
try {
hidepDialog();
json = array.getJSONObject(i);
GetDataAdapter2.setBrand_name(json.getString(Image_Name_JSON));
// Adding image title name in array to display on RecyclerView click event.
ImageTitleNameArrayListForClick.add(json.getString(Image_Name_JSON));
GetDataAdapter2.setImage(json.getString(Image_URL_JSON));
GetDataAdapter2.setGarment_price(json.getString(garment_price));
GetDataAdapter2.setGarment_name(json.getString(garment_name));
GetDataAdapter2.setImage_full(json.getString(image_full));
GetDataAdapter2.setDesc_text(json.getString(desc_text));
} catch (JSONException e) {
e.printStackTrace();
}
ListOfdataAdapter.add(GetDataAdapter2);
// showFragment();
}
}
Horizantal Recyclerview adapter
final WrapContentLinearLayoutManager linearLayoutManager = new WrapContentLinearLayoutManager(getActivity());
linearLayoutManager.setOrientation(WrapContentLinearLayoutManager.HORIZONTAL);
viewHolder.mAdapterItemMessageBinding.nestedRecyclerview.setLayoutManager(linearLayoutManager);
viewHolder.mAdapterItemMessageBinding.nestedRecyclerview.setHasFixedSize(true);
//mFragmentMessagesBinding.recyclerview1.addItemDecoration(new PaddingItemDecoration(size));
viewHolder.mAdapterItemMessageBinding.nestedRecyclerview.setItemAnimator(new DefaultItemAnimator());
DialogRecyclerViewAdapter rvAdapter = new DialogRecyclerViewAdapter(ListOfdataAdapter, getActivity());
viewHolder.mAdapterItemMessageBinding.nestedRecyclerview.setAdapter(rvAdapter);
rvAdapter.notifyDataSetChanged();
Horizantal Recyclerview Adapter
public class DialogRecyclerViewAdapter extends RecyclerView.Adapter<DialogRecyclerViewAdapter.ViewHolder> {
Context context;
List<UploadImage> dataAdapters;
private SharedPreferences.Editor mSharedPrefEditor;
ImageLoader imageLoader;
public DialogRecyclerViewAdapter(List<UploadImage> getDataAdapter, Context context){
super();
this.dataAdapters = getDataAdapter;
this.context = context;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.cardview, parent, false);
ViewHolder viewHolder = new ViewHolder(view);
return viewHolder;
}
#Override
public void onBindViewHolder(ViewHolder Viewholder, int position) {
final UploadImage dataAdapterOBJ = dataAdapters.get(position);
imageLoader = ImageAdapter.getInstance(context).getImageLoader();
imageLoader.get(dataAdapterOBJ.getImage(),
ImageLoader.getImageListener(
Viewholder.VollyImageView,//Server Image
R.drawable.loading_1,//Before loading server image the default showing image.
android.R.drawable.ic_dialog_alert //Error image if requested image dose not found on server.
)
);
}
#Override
public int getItemCount() {
return dataAdapters.size();
}
class ViewHolder extends RecyclerView.ViewHolder{
public TextView ImageTitleTextView, garment_price, size;
public NetworkImageView VollyImageView ;
public ViewHolder(View itemView) {
super(itemView);
VollyImageView = (NetworkImageView) itemView.findViewById(R.id.VolleyImageView) ;
}
}
}
Vertical Recyclerview ViewHolder
public static class MessageItemHolder extends RecyclerView.ViewHolder {
private Test123Binding mAdapterItemMessageBinding;
public MessageItemHolder(Test123Binding adapterItemMessageBinding) {
super(adapterItemMessageBinding.rvContainer);
mAdapterItemMessageBinding = adapterItemMessageBinding;
}
public void bindMessage(User user, Message message, MessageAdapterViewModelContract contract) {
if (mAdapterItemMessageBinding.getMessageViewModel() == null) {
mAdapterItemMessageBinding.setMessageViewModel(new MessageAdapterViewModel(user,
encodedMail, message, contract));
} else {
mAdapterItemMessageBinding.getMessageViewModel().setUser(user);
mAdapterItemMessageBinding.getMessageViewModel().setMessage(message);
}
}
}

Passing data from Recycler view onClick to Detail Activity with android databinding

I am having a list of items populating through recyclerview with android databinding technique and now I want to pass and populate the same data in detail Activity not getting the right thing to do such. So, kindly help to do this.
public class Fragment extends Fragment {
private FirebaseRecyclerAdapter adapter;
private Firebase mFirebaseRef = new Firebase("https://xyz.firebaseio.com/category/").child("list");
public Fragment() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
final View rootView = inflater.inflate(R.layout.recycler_view, container, false);
final RecyclerView recyclerView = (RecyclerView) rootView.findViewById(R.id.recycler_view);
adapter = new FirebaseRecyclerAdapter<List, ViewHolder>List.class, R.layout.fragment,
ViewHolder.class, mFirebaseRef) {
#Override
protected void populateViewHolder(ViewHolder viewHolder, List list, int i) {
FragmentBinding binding = viewHolder.getBinding();
binding.setList(list);
}
};
recyclerView.setAdapter(adapter);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
recyclerView.addItemDecoration(new DividerItemDecoration(getActivity(), null));
return rootView;
}
public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
public FragmentBinding binding;
public ViewHolder(View itemView) {
super(itemView);
binding = DataBindingUtil.bind(itemView);
itemView.setOnClickListener(this);
}
public FragmentBinding getBinding() {
return binding;
}
#Override
public void onClick(View v) {
Intent intent = new Intent(v.getContext(), DetailedActivity.class);
**// need help here**
v.getContext().startActivity(intent);
}
}
#BindingAdapter("quantity")
public static void setQuantityText(TextView view, int quantity) {
view.setText(String.valueOf(quantity));
}
public static class Handlers {
public static void increment(View view, int max) {
FragmentBinding binding = DataBindingUtil.findBinding(view);
binding.setQuantity(Math.max(max, binding.getQuantity() + 1));
}
public static void decrement(View view, int min) {
FragmentBinding binding = DataBindingUtil.findBinding(view);
binding.setQuantity(Math.min(min, binding.getQuantity() - 1));
}
}
}
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto">
<data>
<variable
name="List"
type="com.xyz.www.android.model.List"/>
<variable
name="quantity"
type="int"/>
<variable
name="Handlers"
type="com.xyz.www.android.ui.fragments.Fragment.Handlers"/>
</data>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingStart="#dimen/activity_horizontal_margin"
android:paddingEnd="#dimen/activity_horizontal_margin"
android:paddingTop="8dp">
<ImageView
android:layout_width="76dp"
android:layout_height="76dp"
android:contentDescription="#string/content_description"
app:imageUrl="#{List.productImageUrl}"
android:padding="8dp"
android:layout_gravity="center_horizontal|bottom"
android:layout_marginTop="8dp" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="8dp"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true"
android:layout_marginStart="72dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#{List.productTitle}"
android:textSize="16sp"
android:textColor="#android:color/primary_text_light"
app:font="#{`Roboto-Regular.ttf`}"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#{List.productSku}"
android:textSize="13sp"
android:paddingTop="8dp"
app:font="#{`Roboto-Regular.ttf`}"/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/Rs"
android:textSize="14sp"
android:paddingTop="8dp"
android:paddingEnd="2dp"
android:paddingStart="2dp"
app:font="#{`Roboto-Regular.ttf`}"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#{List.productSellingPrice}"
android:textSize="14sp"
android:paddingTop="8dp"
android:paddingStart="2dp"
android:paddingEnd="2dp"
android:textColor="#android:color/primary_text_light"
app:font="#{`Roboto-Regular.ttf`}"/>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_alignParentEnd="true"
android:paddingTop="16dp"
android:paddingBottom="16dp">
<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/decrease" />
<TextView
android:layout_width="32dp"
android:layout_height="wrap_content"
app:font="#{`Roboto-Regular.ttf`}"
app:quantity="#{quantity}"
android:textAlignment="center" />
<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/increase" />
</LinearLayout>
</RelativeLayout>
#JsonIgnoreProperties(ignoreUnknown=true)
public class List extends BaseObservable {
String productTitle;
String productSku;
String productImageUrl;
String productDescription;
String productMrp;
String productSellingPrice;
public List() {
}
public List(String productTitle, String productSku,
String productImageUrl, String productDescription,
String productMrp, String productSellingPrice) {
this.productTitle = productTitle;
this.productSku = productSku;
this.productImageUrl = productImageUrl;
this.productDescription = productDescription;
this.productMrp = productMrp;
this.productSellingPrice = productSellingPrice;
}
#Bindable
public String getProductTitle() {
return productTitle;
}
#Bindable
public String getProductSku() {
return productSku;
}
#Bindable
public String getProductImageUrl() {
return productImageUrl;
}
#Bindable
public String getProductDescription() {
return productDescription;
}
#Bindable
public String getProductMrp() {
return productMrp;
}
#Bindable
public String getProductSellingPrice() {
return productSellingPrice;
}

There are a few ways to do this. One is to make List Parcelable so that you can pass it as an Intent extra. You'll then be able to extract it and populate the Detail page.
public static final LIST = "ListContent";
#Override
public void onClick(View v) {
Intent intent = new Intent(v.getContext(), DetailedActivity.class);
FragmentBinding binding = DataBindingUtil.findBinding(v);
intent.putExtra(LIST, binding.getList());
v.getContext().startActivity(intent);
}
Another is to pass only the ID for the List and read the information again in the detail binding. Add the ID to the List and then you'll be able to extract it when you start the activity:
public static final LIST_ID = "ListID";
#Override
public void onClick(View v) {
Intent intent = new Intent(v.getContext(), DetailedActivity.class);
FragmentBinding binding = DataBindingUtil.findBinding(v);
intent.putExtra(LIST_ID, binding.getList().getId());
v.getContext().startActivity(intent);
}
Either way, you can pull the data from the intent in the onCreate of your details Activity:
public void onCreate(...) {
Intent intent = getIntent();
// Using ID:
int id = intent.getIntExtra(LIST_ID);
List list = loadListFromId(id);
// Using Parcelable:
List list = intent.getParcelableExtra(LIST);
//...
}

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

RecyclerView does not show list of objects - android

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